Verify Single or Bulk Emails with Searchbug + n8n

Verify single or bulk emails automatically with Searchbug + n8n

This n8n workflow lets you submit one email address or upload a CSV, verifies every address using the Searchbug Email Verification API, saves results to Google Sheets, and posts a valid/invalid summary to Slack—all in one streamlined run.

What this workflow does

• Receives input via an n8n Form Trigger—either a single email or a CSV file upload.
• Routes processing:
  • Single-email submissions are handled directly.
  • CSV uploads are parsed into one item per row.
• Normalizes the email field so each record is mapped consistently to an `email` property, even if CSV header capitalization varies.
• Verifies each email by calling the Searchbug Email Verification API, while continuing even if some requests error.
• Extracts a clean result object including key verification fields such as status, domain, MX, SMTP provider, and related flags.
• Appends results to Google Sheets as new rows in your “Email Verification” sheet/tab.
• Aggregates totals (valid/invalid/total) and posts a summary to Slack.

Use cases

• Quality-check leads before sending outreach (SaaS operations, sales ops, and marketing teams).
• Validate email lists imported from CRM exports or marketing tools.
• Build an internal “email verification” form for your team using n8n.
• Audit deliverability risk by tracking SMTP/MX-related verification details over time.

Technical details

• Searchbug Email Verification API via an HTTP request using CO_CODE and PASS query parameters.
• Google Sheets: appends each verification result to your selected spreadsheet and “Email Verification” sheet.
• Slack: posts a valid/invalid/total summary to your chosen channel.
• n8n nodes used: if, set, code, slack, form trigger, plus a sticky note for workflow guidance.

Note: For CSV uploads, the file must be a .csv and include an email column.